Alarm attachment.



A. H. JOHNSON.

ALARM ATTACHMENT.

APPLIUATION FILED SBPT.29,1908.

Patented Mar. 16, 1909.

[NVENTOR WITNESSES AROY H. JOHNSON, OF NEWNAN, GEORGIA.

ALARM ATTACHMENT.

Specification of Letters Patent.

Patented March 16, 1909.

Application filed September 29, 1908. Serial No. 455,268.

To all whom it may concern:

Be it known that I, ARCY H. JOHNSON, a citizen of the United States, residing at Newnan, in the county of Coweta and State of Georgia, have invented certain new and useful Improvements in Alarm Attachments and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to new and useful improvements in signal or alarm operating mechanism and more particularly to that class adapted to be used in connection with clocks of various constructions for automatically sounding an alarm and my object is to provide a suitable disk and operatively connect the same to parts of the clock, said disk containing suitable contact points for cooperating with the signaling device.

A further object is to provide means for shifting the parts of the signaling mechanism extending over the face of the disk, whereby various sets of contact points on the disk will be engaged and a greater or less number of signals produced with each revolution of the disk.

Other objects and advantages will be hereinafter referred to and more particularly pointed out in the claims.

In the accompanying drawings which are made a part of this application, Figure 1 is a front elevation of a clock showing the manner of shifting the parts cooperating with the disk. Fig. 2 is a detail elevation of the clock works removed from the clock frame, showing my improved signaling device attached thereto, and, Fig. 3 is a detail perspective view showing the manner of attaching the disk to the clock works.

Referring to the drawings in which similar reference numerals designate corresponding parts throughout the several views, 1 indicates the clock case, which may be constructed in any preferred manner and 2 indicates the dial of the clock, said dial being divided in the usual manner into hours and minutes.

Located within the case 1 is a frame 3, within which is operatively mounted the usual or any preferred form of clock works 4, and as shown in this instance, the works are operated through the medium of a pendulum 5, although it will be fully understood that the same may be operated by spring power or otherwise, as deemed most desirable.

In order to sound an alarm or operate a signaling device, I provide an auxiliary frame 7, which auxiliary frame is secured a to the frame 3 and extending laterally through the auxiliary frame is a shaft 8, on which is fixed a pinion 9, said pinion being adapted to cooperate with one of the gears 10 of the clock works 4, the rotation of the gear 10 operating the pinion 9 and shaft 8 to which it is secured.

Fixed to the projecting end of the shaft 8 is a disk 11, on the outer face of which are located a plurality of contact points 12, said points being preferably arranged in series, each series describing a circle on the face of the disk and if preferred, the contact points may be removably secured to the disk, so that a greater or less number of the points may be utilized for each series, as desired.

Fixed to the frame 3, is a bracket 13, through the arms 14 of which extends a shaft 15, one end of the shaft being provided with a finger 16, which is adapted to extend over and engage the contact points 12 on the disk, while the opposite end portion of the shaft is formed into a crank 17, whereby when the shaft 15 is rotated, a pitman 18 secured to the cranked portion of the shaft, will be given an end thrust. The shaft 15 is of such length that it can be moved longitudinally through the arms 14 a sufficient distance to bring the finger end thereof in alinement with any one of the series of contact points on the disk and is operated through the medium of a rod 19, which is also slidably mounted in the arms 14 and connected to the shaft 15 through the medium of an extension 20, the free end of which passes between the collars 21 on the shaft 15, thereby permitting the shaft 15 to readily rotate and at the same time cause the shaft to travel with the rod 19 when the same is moved longitudinally.

The rod and parts attached thereto are olperated through the medium of a lever 22, t e upper end of which is pivoted to the frame 3, or other suitable object while the lower end thereof is provided with an angular terminal 23, which terminal is adapted to extend through a slot 24 in the dial of the clock and by connecting the lever 22 in its length to the rod 19 by means of a link 25, the movement of the terminal 23 longitudinally of the slot 24, will move the rod 19 and shaft 15 attached free end in position to engage a similar contact point 28, so that when the contact finger 16 engages one of the contact points 12, on-

the disk, the shaft 15 will be partially r0- tated andthe switch 26 moved into engagement with the contact point 28, thereby. clos ing an electirc circuit and sounding an alarm or signal, the contact points 27 and 28 being connected to any suitable/ form of signaling device and battery through line Wires 29 and 30, respectively. Instead, however, of connecting the pitman 18 to a switch, said pitman may be connected to the usual form of alarm mechanism as employed on alarm clocks, the thrust of the pitman being employed for releasing the alarm operating mechanism and by increasing. or decreasing the number of contact points 12 onv the disk, the number of alarms orsignals produced during each revolution of the disk will be varied and the finger 16 may be positively registered with any one of the series of points 12, by fixing a scale 31 immediately below the slot 24, with which the terminal 23 is adaptedto register, there being a graduation for each series of points 12 on. the disk.

By arranging the contact points in series and increasing or decreasing the number of pins in each series, the number of alarms given at each revolution of the disk, will be likewise increased and if it is desired. to increase the speed of the disk to produce a greater number of alarms each hour, a sniallersized pinion 9 .is to be introduced onto. the shaft 8.

It will thus be seen that I have provided a signaling or alarming device that may be applied to any form ofclock mechanism and one that can be used for various purposes and. it willlikewise be seen that the number of alarms .or signals may be increased or decreasedand suitably timed as occasion may require.

It will further be seen that my improved signaling mechanism may be attached to the clock mechanism at any time and in view of the simplicity of the parts, may be very cheaply produced.

What I claim is:

1.. Ina signaling device, the combination with'clock works of a disk, a pitman connected to the disk and adapted to cooperate with one of the gears of the clock works, a plurality of contact points arranged in series on the face of .the disk, a slidably mounted shaft having a finger at oneend adapted to engage thecontact points on the disk and a cranked portion at the opposite end of the shaft, a pitman engaging the cranked end of the. shaft, adapted to operate a signaling mechanism when the shaft is partially rotated and a lever connected to said shaft adapted to move the shaft longitudinally when thelever is swung back and forth.

2. In a signaling device, the combination with clock works; of a disk operatively connected to oneof the gears of the clock works, contact points carried by said disk, a slid ably mounted rod having a finger at one end and a cranked portion at the opposite. end, said finger being adapted to extend into the path of the contact points, a pitman connected at one end to the cranked portion of the shaft and at its opposite end. to a signaling device,

a slidably mounted rod adjacent said shaft, means to connect said rod to the shaft and a pivotally mounted lever connected to said rod adapted to move the rod and shaft longitudinally when the lever is swung back and.

forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

AHOY H. JOHNSON.

Witnesses: IE. TAYLOR,

W. G. Pos'r. 

